US4967756A - Blood pressure and heart rate monitoring method and apparatus - Google Patents
Blood pressure and heart rate monitoring method and apparatus Download PDFInfo
- Publication number
- US4967756A US4967756A US07/207,313 US20731388A US4967756A US 4967756 A US4967756 A US 4967756A US 20731388 A US20731388 A US 20731388A US 4967756 A US4967756 A US 4967756A
- Authority
- US
- United States
- Prior art keywords
- blood pressure
- maximum value
- pressure
- cuff
- patient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/02208—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers using the Korotkoff method
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/0225—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds
Definitions
- This invention relates generally to auscultatory blood pressure and pulse monitoring method and apparatus. More specifically, it concerns an ambulatory device for the automatic or demand recording and trans-telephonic communication, for later diagnosis, of information including blood pressure, heart rate, time of day, event code and figure of merit.
- the improved method includes systolic blood pressure-adaptive cuff pressurization and figure of merit computation to ensure that information comfortably, reliably and accurately is monitored and reported.
- ambulatory blood pressure monitoring and recording equipment continuously measures a patient's systolic and diastolic blood pressure for a given period of time.
- Recent advances in monitoring equipment include the ability of the patient trans-telephonically to communicate information regarding blood pressure to a remote site for permanent storage and either simultaneous or later diagnosis, rather than requiring the patient to return the equipment or a magnetic tape cassette to the physician after each recording session.
- a serious shortcoming of state-of-the-art equipment is the fact that the pressure cuff which locates the microphone used to pick up auscultatory signals indicative of blood pressure may be less than optimally positioned on the patient's arm, resulting in inadequate signal strength and incomplete or misleading blood pressure data.
- Another object of the invention is to provide such a device that is individual patient physiology- and activity-adaptive, wherein the maximum cuff pressure tracks the rise and fall of the patient's systolic blood pressure, thereby to provide only marginally higher pressure than the amount needed to occlude blood flow in the limb around which the cuff is placed.
- FIG. 1 is a simplified, schematic block diagram of the apparatus of the invention, made in accordance with its preferred embodiment.
- FIG. 2A-2E is a flowchart of the figure of merit software routine as it is implemented in accordance with the preferred method of the invention.
- FIG. 1 a simplified, schematic block diagram of the apparatus of the present invention, indicated generally at 10, is illustrative of its preferred embodiment. In the interest of brevity and clarity, detail intentionally is omitted from FIG. 1, e g. latches, drivers and other detailed, device-level circuitry are not shown It will be understood by those skilled in the art that, depending upon the particular devices chosen to perform the required functions, such circuitry also may be required.
- Apparatus 10 is a lightweight, ambulatory, battery-powered device that is capable of measuring, recording and transmitting blood pressure and heart rate data, as well as supplemental information found to have particular utility to a prescribing physician It is self-contained, requiring neither external power nor pump, and conveniently may be carried upon the person of the patient A blood pressure and heart rate reading takes approximately one minute, during which cycle the patient's systolic and diastolic blood pressure are measured by inflating the cuff to a programmed maximum pressure and monitoring the pressure and K-sound inputs as the cuff slowly and steadily deflates
- apparatus 10 is capable of recording at programmed intervals between ten and ninety minutes or on demand for a period of twenty-four hours. As will be seen, apparatus 10 provides the patient with the ability trans-telephonically to transmit data over standard phone lines, thus obviating a visit to the physician each time a recording session is complete.
- Apparatus 10 includes computer means, or a microprocessor or microcontroller 12; program storage means, or a read-only memory (ROM) 14; and data storage or recording means, or a read and write memory (RAM) 16.
- ROM read-only memory
- RAM read and write memory
- K-sounds Korotkoff sounds (K-sounds) and static (DC) and dynamic (AC) blood pressure data are acquired and are discriminated from noise and other artifacts (particularly motion artifacts), as by any of a variety of known means and methods that form no part of the present invention.
- the K-sounds are sensed by a microphone (not shown) which is taped on the patient's arm underneath a pressurizable cuff 18 that surrounds the arm.
- K-sounds are detected acoustically to produce a signal representative thereof.
- K-sound detecting means include the microphone and its signal conditioner, K-sound amplifier 20, the output of which may be selected as an output from a multiplexer (not shown) associated with an analog to digital converter (ADC) 22, which produces an eight-bit digital value approximately once every 100 microseconds. This byte then is inputted to microcontroller 12 via one of its data ports.
- ADC analog to digital converter
- Cuff 18 is pressurized, and static pressure (the slowly, steadily declining cuff pressure) and dynamic pressure (the pulse waveform blood pressure) are monitored by pressure sense and control circuit 24, which includes a pressure transducer, a pump and a cutoff valve, all of which are integral to the housing (not shown) in which the diagrammed circuitry is enclosed Static and dynamic pressure readings are provided in eight-bit digital format to microcontroller 12 via the multiplexer associated with ADC 22.
- a programmable time of day clock 26 provides means for recording, with the blood pressure and heart rate data, the time of day at which, and the date on which, the reading was taken. As they must retain their otherwise volatile memories in the event of battery discharge or failure, RAM 16 and clock 26 are powered by a battery backup circuit 28.
- Trans-telephonic means for communicating blood pressure and other data to a remote site for diagnosis includes a voltage controlled oscillator (VCO) and speaker driver circuit 30 enable frequency shift keyed (FSK) tone generation via speaker S, as by a telephone transmitter being placed adjacent a small hole in the enclosure.
- VCO voltage controlled oscillator
- FSK frequency shift keyed
- a modified RS-232 serial interface 32 is provided for data communication from apparatus 10 to a parallel printer (shown schematically to the left in FIG. 1) or to and from data terminal equipment (DTE), e.g. a computer (shown schematically to the right in FIG. 1), which complies with the RS-232 telecommunications standard.
- a parallel printer shown schematically to the left in FIG. 1
- DTE data terminal equipment
- a computer shown schematically to the right in FIG. 1
- a four-digit, seven-segment liquid crystal display (LCD) 34 and a two-pushbutton (four-position) keyboard 36 enable the physician, the patient or the service technician to view certain parameters stored in ROM 14 or RAM 16 and, if desired, to change them.
- FIG. 2 a flowchart of the FIGURE OF MERIT software routine implemented according to the preferred method of the invention, is shown It will be appreciated that diagramming conventions have been adopted, including a generally top-to-bottom and left-to-right directional flow.
- the ellipses indicate entry points to routines or subroutines, exit points from routines or subroutines, or off-sheet connectors to other parts of FIGS. 2A through 2E, which span five sheets (e.g. entry/exit points/off-sheet connectors designated 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120).
- the rectangles indicate task or action blocks (e.g.
- the rhombuses indicate decision blocks (e.g. decision blocks 176, 178, 180, 182, 184, 186, 188, 190, 192, 194, 196, 198, 200, 202, 204, 206, 208, 210, 212, 214, 216, 218, 220, 222, 224, 226, 228), with the answer to the enclosed question determining the decisional path next to be taken.
- FIGS. 2A through 2E are quite self-explanatory to those of ordinary skill in computer science and allied arts, and will not, therefore, be discussed in detail. It is noted that, unless otherwise indicated in the specification, numeric values are decimal and alphanumerics within quotes, e.g. "A1", are American Standard Code for Information Interchange (ASCII) characters.
- ASCII American Standard Code for Information Interchange
- K-COUNTER is a variable that represents the number of acceptable K-SOUNDs that are encountered. (K-sound acceptability may be based upon any of a wide range of known criteria including, for example, an acceptably low rate of change in the indicated heart rate, as may be derived from AC pressure, as well as corresponding K-sound, waveform timing.) It is initialized to zero.
- variable SAMPLE COUNTER contains the number of K-SOUNDs that have been sampled over the sampling interval (which may be a test interval which number or count is referred to herein as K-sound frequency or a more normal, automatic or demand recording session or event).
- variable RAM BYTE POINTER contains the address of the first of consecutive bytes in RAM 16 which contain K-SOUND amplitude values.
- RAM BYTE POINTER is used as a pointer into the RAM buffer segment of memory.
- the software flowcharted in FIG. 2A counts the number of acceptable K-SOUND samples over the interval and assigns a NUMBER CODE between 1 and 4 (inclusive), depending upon whether K-COUNTER is less than twelve; greater than or equal to twelve but less than eighteen; greater than or equal to eighteen but less than twenty-four; or greater than or equal to twenty-four
- the NUMBER CODEs assigned for each of the above categories are, respectively, "4"; "3"; "2"; and "1.”
- FIGS. 2B and 2C flowchart the software routine that analyzes the peak amplitudes of the K-sounds, categorizes them as falling within one of four K-sound ranges and encodes them into a corresponding one of four, symbolic ALPHA CODEs.
- ALPHA CODEs when considered in light of the distinctive, symbolic NUMBER CODEs assigned in the routine described immediately above, have been found to give valuable information to the physician regarding the quality, or figure of merit, of the data which was simultaneously recorded therewith.
- the software flowcharted in FIG. 2B initializes three range limit variables, HIGH, MID and LOW, to the preferred values 192, 128 and 64, respectively (the maximum value of the output of eight-bit ADC 22 is 255, which may be made to represent the maximum K-sound amplitude of interest by conventional null and gain adjustment of amplifier 20 and ADC 22); initializes a variable POINTER to the address of the RAM buffer; initializes a variable LOOP COUNTER to the number of K-sound samples to be analyzed and clears three variables, HIGH COUNTER, MID COUNTER and LOW COUNTER.
- Peak amplitude values representing acceptable K-sounds are compared with these variables and HIGH COUNTER, MID COUNTER and LOW COUNTER selectively are incremented to indicate the frequencies with which the sampled peak amplitudes are within the three ranges.
- LOOP COUNTER is decremented to zero (when the samples are exhausted)
- control is passed to the AMPLITUDE INDEX ENCODING routine.
- FIG. 2C illustrates the process by which the results of the amplitude index analysis are encoded into the ALPHA CODE alluded to above
- Each of the HIGH, MID and LOW COUNTERs are compared to a predetermined value which, in the preferred method of the invention, is 4.
- variable ALPHA CODE is set to "A.” If more than four HIGH amplitude K-sounds were counted, then the variable ALPHA CODE is set to "B.” If more than four LOW amplitude K-sounds were counted, then ALPHA CODE is set to "C.” If none of the above is true, then ALPHA CODE is set to "D.”
- the two-digit, alphanumeric code which is formed by concatenating a NUMBER CODE and an ALPHA CODE representing, respectively, the frequency and amplitude of the K-sounds, is referred to herein as a figure of merit.
- the alphanumeric code generated by the routine is stored in a data record, within RAM 16, for example, containing the blood pressure and heart rate data recorded during the (demand) event or (automatic) session, thereby to associate a figure of merit with the blood pressure data the quality of which it characterizes.
- Operatively coupling the software illustrated in FIG. 2 with computer means provides means integral with more conventional blood pressure monitoring and recording apparatus for qualitatively characterizing such blood pressure data.
- This characterizing means includes software means for evaluating the data, based upon predetermined criteria e.g. based upon the frequency and amplitude of the accompanying K-sounds. The result of such evaluation is quality indicia, such as the figure of merit or the quality index produced by the illustrated software which executes in microcontroller 12.
- quality indicia such as the figure of merit or the quality index produced by the illustrated software which executes in microcontroller 12.
- these quality indicia are encoded, by the software flowcharted in FIGS. 2C through 2E, to produce symbolic data interpretable as representing the K-sound-based figure of merit or quality index.
- the alphanumeric figure of merit is converted to a single one of four numeric digits, referred to herein as a K-sound quality index, by the mapping illustrated in Table 1.
- mappings may be employed within the spirit of the invention. For example, if it is thought that K-sound frequency is a relatively better indicator of the quality of a blood pressure measurement than is K-sound amplitude, the mapping may be biased (weighted), or made to be asymmetric with respect to its top-to-bottom, left-to-right, diagonal axis.
- FIGS. 2D and 2E a flowchart illustrating this MATRIX TO 1 OF 4 CONVERSION routine is described It will be appreciated how straightforwardly the mapping illustrated in Table 1 may be performed. It will also be appreciated that the mapping may, within the spirit of the invention, be done in hardware rather than software.
- the software flowcharted in FIG. 2D first determines which ALPHA CODE is contained in the figure of merit. It then determines, for whichever of the four cases, which NUMBER CODE is contained in the figure of merit.
- the input paths to the SET 1 OF 4 CODE TO "1" (indicating relatively high quality) action block include any of the following figures of merit "A1", "A2" or "B1.
- the input criteria to the SET 1 OF 4 CODE TO "2" action block include “A3”, “B2”, “B3”, “C1” or “C2. " If none of these figures of merit is present in the figure of merit buffer segment of RAM 16, then control is transferred to the appropriate continuation ROW. In FIG. 2E, it may be seen that "A4", "B4", “C3”, “D1” or “D2” figures of merit result in the setting of the 1 OF 4 CODE to "3.” Finally, "C4", "D3” or “D4" as a figure of merit maps into a "4" K-sound quality index (indicating relatively low quality).
- cuff 18 be pressurized to a level above that of the patient's systolic blood pressure.
- cuff 18 is pressurized to a default (maximum) value, stored as variable MAXP, under the control of microcontroller 12, and systolic blood pressure readings then are taken. If the measured systolic blood pressure value, stored as variable SYS, is within a predetermined range of, or exceeds, the default value MAXP (determined, for example, by too early a systolic blood pressure, or C, peak in the pressure pulse waveform), then the default value is increased by a predetermined amount.
- the improved method thus ensures that reliable readings are taken of the patient's systolic blood pressure, e.g that cuff 18 is pressurized sufficiently to occlude the flow of blood in the patient's arm.
- MAXP : (MAXP+20);
- MAXP : (MAXP-10);
- the method of adjusting the maximum cuff pressure to accommodate the rise and fall of the patient's systolic pressure may be understood from the pseudo-code. Briefly summarized, the method involves replacement of the default maximum cuff pressure value with a value that is equal to the default value plus or minus an incremental value which has been determined by trial and error to produce the desired response to a wide range of systolic pressure dynamics.
- the maximum cuff pressure in successive pressurization and measurement cycles will seek a level that is within a predetermined range above the patient's systolic blood pressure. In this way, the maximum cuff pressure tracks the rise and fall of the patient's systolic blood pressure.
- the desired ⁇ window ⁇ for MAXP is 25-45 mm Hg above the patient's systolic blood pressure
- the maximum increment, or upward adjustment, of MAXP is 30 mm Hg above the physician-selected maximum value.
- MAXP is not permitted to fall below 140 mm Hg. This is to avoid unduly long ⁇ warm-up ⁇ periods, during which the cuff pressure is below the systolic blood pressure and blood pressure and heart rate readings are assumed to be inaccurate.
- the particular values used or the steps taken to adjust the maximum cuff pressure dynamically to adapt to the patient may differ from the specifics of the preceding discussion, without departing from the spirit of the invention.
- the important advantage of this improvement to ambulatory patient blood pressure monitoring apparatus is that the physician is provided not only with blood pressure data, but also with supplemental information that may be interpreted as more broadly indicative of the context in which the recording was made. For example, when the Figure of Merit is analyzed, it may be found that the K-sound frequency was too low to accord any weight to the blood pressure readings taken during the previous twenty-four hour period, and repositioning of the microphone and/or the pressure cuff may be indicated.
- the improved method of ambulatory patient blood pressure monitoring and recording then includes the steps of (1) monitoring patient blood pressure data over a predetermined period of time, (2) monitoring Korotkoff sound amplitude and or frequency for the predetermined period of time, and (3) generating a code which characterizes the blood pressure data based upon an evaluation of the K-sound data.
- generating a code involves assigning one of a first set of plural symbols to represent the Korotkoff sound frequency, assigning one of a second set of symbols distinctive from said first set of symbols to represent the Korotkoff sound amplitudes, and concatenating said one of said first set of symbols with said one of said second set of symbols.
- one set of symbols is alphabetic and the other is numeric, as in "A1", and D4.
- computer means 12 cooperate, in the preferred embodiment of the invention, with pressure sense means, Korotkoff sound detecting means and memory means to monitor the blood pressure and Korotkoff sounds, and to generate the code, which by one method is a two-digit figure of merit, and by another is a single-digit quality index.
- systolic pressure-adaptive means for pressurizing a cuff are capable of adapting to the patient's systolic blood pressure, thereby to ensure that the maximum cuff pressure is within a predetermined pressure range above the patient's systolic blood pressure during such blood pressure data monitoring and recording.
- Cuff pressure is adjusted by elevating the cuff pressure (which may be thought of as counter-pressure) to a predetermined maximum value, measuring the patient's systolic blood pressure as the static cuff pressure declines, and comparing the measured systolic pressure with the maximum pressure value.
Abstract
Description
TABLE 1 ______________________________________ 1 2 3 4 ______________________________________ A 1 1 2 3B 1 2 2 3C 2 2 3 4D 3 3 4 4 ______________________________________
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/207,313 US4967756A (en) | 1988-06-15 | 1988-06-15 | Blood pressure and heart rate monitoring method and apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/207,313 US4967756A (en) | 1988-06-15 | 1988-06-15 | Blood pressure and heart rate monitoring method and apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
US4967756A true US4967756A (en) | 1990-11-06 |
Family
ID=22770003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/207,313 Expired - Lifetime US4967756A (en) | 1988-06-15 | 1988-06-15 | Blood pressure and heart rate monitoring method and apparatus |
Country Status (1)
Country | Link |
---|---|
US (1) | US4967756A (en) |
Cited By (46)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5165416A (en) * | 1990-08-23 | 1992-11-24 | Colin Electronics Co., Ltd. | Continuous blood pressure monitoring system having a digital cuff calibration system and method |
US5365935A (en) * | 1991-09-10 | 1994-11-22 | Ralin, Inc. | Portable, multi-channel ECG data monitor/recorder |
US5392781A (en) * | 1991-04-16 | 1995-02-28 | Cardiodyne, Incorporated | Blood pressure monitoring in noisy environments |
EP0764910A1 (en) * | 1995-09-20 | 1997-03-26 | Colin Corporation | Blood pressure measuring apparatus |
US5727560A (en) * | 1995-09-20 | 1998-03-17 | Colin Corporation | Blood pressure measuring apparatus |
US5931791A (en) * | 1997-11-05 | 1999-08-03 | Instromedix, Inc. | Medical patient vital signs-monitoring apparatus |
US5941829A (en) * | 1995-11-08 | 1999-08-24 | Instromedix, Inc. | Concurrent medical patient data and voice communication method and apparatus |
US6258037B1 (en) | 1999-06-25 | 2001-07-10 | Cardiodyne Division Of Luxtec Corporation | Measuring blood pressure in noisy environments |
US20010047252A1 (en) * | 1997-01-10 | 2001-11-29 | Brown Stephen J. | Disease simulation system and method |
US6375614B1 (en) | 1996-06-17 | 2002-04-23 | Cybernet Systems Corporation | General-purpose medical istrumentation |
US6428481B1 (en) * | 1998-11-27 | 2002-08-06 | Colin Corporation | Blood pressure monitor apparatus |
US6645155B2 (en) | 2000-05-26 | 2003-11-11 | Colin Corporation | Blood pressure monitor apparatus |
US20040193377A1 (en) * | 1999-03-22 | 2004-09-30 | Brown Stephen J. | Research data collection and analysis |
US6968375B1 (en) | 1997-03-28 | 2005-11-22 | Health Hero Network, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US20060089541A1 (en) * | 1996-06-17 | 2006-04-27 | Braun Jeffrey C | General-purpose medical instrumentation |
US7223236B2 (en) | 1992-11-17 | 2007-05-29 | Health Hero Network, Inc. | System and method for monitoring user-related data from a person |
US7260480B1 (en) | 2003-04-07 | 2007-08-21 | Health Hero Network, Inc. | Method and system for integrating feedback loops in medical knowledge development and healthcare management |
US7297109B2 (en) | 1992-11-17 | 2007-11-20 | Health Hero Network, Inc. | Method and system for improving adherence with a diet program or other medical regimen |
US7305348B1 (en) | 1996-02-20 | 2007-12-04 | Health Hero Network, Inc. | Aggregating and pooling health related information in a communication system with feedback |
US7399276B1 (en) | 2003-05-08 | 2008-07-15 | Health Hero Network, Inc. | Remote health monitoring system |
US20080234587A1 (en) * | 2007-03-20 | 2008-09-25 | Tiba Medical, Inc. | Ambulatory patient monitoring apparatus, system and method |
US20080260173A1 (en) * | 2005-10-14 | 2008-10-23 | Medicalgorithmics Ltd. | Method, device and system for cardio-acoustic signal analysis |
US7555436B2 (en) | 1997-01-16 | 2009-06-30 | Health Hero Network, Inc. | Personalized display of health information |
US20090171227A1 (en) * | 2005-10-14 | 2009-07-02 | Medicalgorithmics Ltd. | Systems for safe and remote outpatient ecg monitoring |
US7584108B2 (en) | 1996-12-23 | 2009-09-01 | Health Hero Network, Inc. | Network media access control system for encouraging patient compliance with a treatment plan |
US7613590B2 (en) | 1992-11-17 | 2009-11-03 | Health Hero Network, Inc. | Modular microprocessor-based power tool system |
US7689440B2 (en) | 1992-11-17 | 2010-03-30 | Health Hero Network, Inc. | Method and apparatus for remote health monitoring and providing health related information |
US20100117835A1 (en) * | 1999-03-03 | 2010-05-13 | Reuven Nanikashvili | System and a method for physiological monitoring |
US7761312B2 (en) | 1992-11-17 | 2010-07-20 | Health Hero Network, Inc. | Remote health monitoring and maintenance system |
US7765112B2 (en) | 1996-10-16 | 2010-07-27 | Health Hero Network, Inc. | Multiple patient monitoring system for proactive health management |
US20100199102A1 (en) * | 2009-01-30 | 2010-08-05 | Sunrise Medical HHG, Inc. (DBA DeVilbiss Healthcare) | Device Having Coded Output of Operational Data |
US7814143B2 (en) | 1997-03-10 | 2010-10-12 | Health Hero Network, Inc. | System and method for modifying documents sent over a communications network |
US7862506B2 (en) | 1994-05-23 | 2011-01-04 | Health Hero Network, Inc. | Diabetes management system |
US20110125036A1 (en) * | 2006-10-18 | 2011-05-26 | Toshiaki Nakajima | Therapeutic system, therapeutic device, and control method |
US7996187B2 (en) | 2005-02-16 | 2011-08-09 | Card Guard Scientific Survival Ltd. | Method and system for health monitoring |
US8005690B2 (en) | 1998-09-25 | 2011-08-23 | Health Hero Network, Inc. | Dynamic modeling and scoring risk assessment |
US8027809B2 (en) | 1992-11-17 | 2011-09-27 | Health Hero Network, Inc. | Home power management system |
US8078431B2 (en) | 1992-11-17 | 2011-12-13 | Health Hero Network, Inc. | Home power management system |
US8078407B1 (en) | 1997-03-28 | 2011-12-13 | Health Hero Network, Inc. | System and method for identifying disease-influencing genes |
US8095340B2 (en) | 1992-11-17 | 2012-01-10 | Health Hero Network, Inc. | Home power management system |
US8407063B2 (en) | 1992-11-17 | 2013-03-26 | Robert Bosch Healthcare Systems, Inc. | Multi-user remote health monitoring system with biometrics support |
CN109862826A (en) * | 2016-08-18 | 2019-06-07 | 皇家飞利浦有限公司 | Blood pressure management |
WO2020069186A1 (en) * | 2018-09-26 | 2020-04-02 | TurnCare, Inc. | Systems and methods for controlling and monitoring inflatable perfusion enhancement apparatus for mitigating contact pressure |
US11504927B2 (en) | 2018-03-23 | 2022-11-22 | TurnCare, Inc. | Systems and methods for controlling and monitoring inflatable perfusion enhancement apparatus for mitigating contact pressure |
US11737905B2 (en) | 2018-03-23 | 2023-08-29 | TurnCare, Inc. | Inflatable perfusion enhancement apparatuses and associated devices, systems and methods |
US11980565B2 (en) | 2019-03-25 | 2024-05-14 | TurnCare, Inc. | Inflatable perfusion enhancement apparatuses and associated devices, systems and methods |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4216779A (en) * | 1977-05-16 | 1980-08-12 | Del Mar Avionics | Blood pressure monitoring system |
US4252127A (en) * | 1979-06-19 | 1981-02-24 | Iowa State University Research Foundation | Portable blood pressure recorder |
US4273136A (en) * | 1977-11-24 | 1981-06-16 | Sharp Kabushiki Kaisha | Electronic sphygmomanometer |
US4313445A (en) * | 1977-10-25 | 1982-02-02 | Ivac Corporation | Electronic sphygmomanometer |
US4326536A (en) * | 1977-11-15 | 1982-04-27 | Matsushita Electric Works, Ltd. | Sphygmomanometer |
US4407297A (en) * | 1979-08-06 | 1983-10-04 | Medtek Corporation | Method and apparatus for performing non-invasive blood pressure and pulse rate measurements |
US4461266A (en) * | 1982-04-29 | 1984-07-24 | Critikon, Inc. | Adaptive incremental blood pressure monitor |
US4501281A (en) * | 1981-12-18 | 1985-02-26 | Sharp Kabushiki Kaisha | Electronic sphygmomanometer |
US4660567A (en) * | 1984-09-27 | 1987-04-28 | Takeda Medical Company Limited | Method of automatically measuring blood pressure, and apparatus therefor |
US4712564A (en) * | 1985-02-13 | 1987-12-15 | Terumo Corporation | Blood pressure measuring apparatus |
US4722349A (en) * | 1983-09-29 | 1988-02-02 | Zvi Halperin | Arrangement for and method of tele-examination of patients |
-
1988
- 1988-06-15 US US07/207,313 patent/US4967756A/en not_active Expired - Lifetime
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4216779A (en) * | 1977-05-16 | 1980-08-12 | Del Mar Avionics | Blood pressure monitoring system |
US4313445A (en) * | 1977-10-25 | 1982-02-02 | Ivac Corporation | Electronic sphygmomanometer |
US4326536A (en) * | 1977-11-15 | 1982-04-27 | Matsushita Electric Works, Ltd. | Sphygmomanometer |
US4273136A (en) * | 1977-11-24 | 1981-06-16 | Sharp Kabushiki Kaisha | Electronic sphygmomanometer |
US4252127A (en) * | 1979-06-19 | 1981-02-24 | Iowa State University Research Foundation | Portable blood pressure recorder |
US4407297A (en) * | 1979-08-06 | 1983-10-04 | Medtek Corporation | Method and apparatus for performing non-invasive blood pressure and pulse rate measurements |
US4501281A (en) * | 1981-12-18 | 1985-02-26 | Sharp Kabushiki Kaisha | Electronic sphygmomanometer |
US4461266A (en) * | 1982-04-29 | 1984-07-24 | Critikon, Inc. | Adaptive incremental blood pressure monitor |
US4722349A (en) * | 1983-09-29 | 1988-02-02 | Zvi Halperin | Arrangement for and method of tele-examination of patients |
US4660567A (en) * | 1984-09-27 | 1987-04-28 | Takeda Medical Company Limited | Method of automatically measuring blood pressure, and apparatus therefor |
US4712564A (en) * | 1985-02-13 | 1987-12-15 | Terumo Corporation | Blood pressure measuring apparatus |
Cited By (133)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5165416A (en) * | 1990-08-23 | 1992-11-24 | Colin Electronics Co., Ltd. | Continuous blood pressure monitoring system having a digital cuff calibration system and method |
US5392781A (en) * | 1991-04-16 | 1995-02-28 | Cardiodyne, Incorporated | Blood pressure monitoring in noisy environments |
US5365935A (en) * | 1991-09-10 | 1994-11-22 | Ralin, Inc. | Portable, multi-channel ECG data monitor/recorder |
US8419636B2 (en) | 1992-11-17 | 2013-04-16 | Robert Bosch Healthcare Systems, Inc. | Method and system for improving adherence with a diet program or other medical regimen |
US9477939B2 (en) | 1992-11-17 | 2016-10-25 | Robert Bosch Healthcare Systems, Inc. | Radio frequency based remote health monitoring |
US7941323B2 (en) | 1992-11-17 | 2011-05-10 | Health Hero Network, Inc. | Remote health monitoring and maintenance system |
US7223235B2 (en) | 1992-11-17 | 2007-05-29 | Health Hero Network, Inc. | System and method for monitoring blood pressure from a person |
US7877276B2 (en) | 1992-11-17 | 2011-01-25 | Health Hero Network, Inc. | Messaging to remote patients in a networked health-monitoring system |
US8027809B2 (en) | 1992-11-17 | 2011-09-27 | Health Hero Network, Inc. | Home power management system |
US7941327B2 (en) | 1992-11-17 | 2011-05-10 | Health Hero Network, Inc. | User monitoring |
US7761312B2 (en) | 1992-11-17 | 2010-07-20 | Health Hero Network, Inc. | Remote health monitoring and maintenance system |
US7223236B2 (en) | 1992-11-17 | 2007-05-29 | Health Hero Network, Inc. | System and method for monitoring user-related data from a person |
US8015025B2 (en) | 1992-11-17 | 2011-09-06 | Health Hero Network, Inc. | Method and apparatus for remote health monitoring and providing health related information |
US8015030B2 (en) | 1992-11-17 | 2011-09-06 | Health Hero Network, Inc. | User-based health monitoring |
US7827040B2 (en) | 1992-11-17 | 2010-11-02 | Health Hero Network, Inc. | Patient control of health-related data in a remote patient monitoring system |
US8019618B2 (en) | 1992-11-17 | 2011-09-13 | Health Hero Network, Inc. | Report generation in a networked health-monitoring system |
US8617065B2 (en) | 1992-11-17 | 2013-12-31 | Robert Bosch Healthcare Systems, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US8024201B2 (en) | 1992-11-17 | 2011-09-20 | Health Hero Network, Inc. | Method and apparatus for remote health monitoring and providing health related information |
US7853455B2 (en) | 1992-11-17 | 2010-12-14 | Health Hero Network, Inc. | Remote health monitoring and maintenance system |
US7877274B2 (en) | 1992-11-17 | 2011-01-25 | Health Hero Network, Inc. | Messaging to remote patients in a networked health-monitoring system |
US7979284B2 (en) | 1992-11-17 | 2011-07-12 | Health Hero Network, Inc. | Interactive video based remote health monitoring system |
US9215979B2 (en) | 1992-11-17 | 2015-12-22 | Robert Bosch Healthcare Systems, Inc. | Multi-user remote health monitoring system |
US7689440B2 (en) | 1992-11-17 | 2010-03-30 | Health Hero Network, Inc. | Method and apparatus for remote health monitoring and providing health related information |
US8489428B2 (en) | 1992-11-17 | 2013-07-16 | Robert Bosch Healthcare Systems, Inc. | Remote health monitoring and maintenance system |
US7264591B2 (en) | 1992-11-17 | 2007-09-04 | Health Hero Netowrk, Inc. | System and method for monitoring air flow from a person |
US7297109B2 (en) | 1992-11-17 | 2007-11-20 | Health Hero Network, Inc. | Method and system for improving adherence with a diet program or other medical regimen |
US7613590B2 (en) | 1992-11-17 | 2009-11-03 | Health Hero Network, Inc. | Modular microprocessor-based power tool system |
US8078431B2 (en) | 1992-11-17 | 2011-12-13 | Health Hero Network, Inc. | Home power management system |
US8407063B2 (en) | 1992-11-17 | 2013-03-26 | Robert Bosch Healthcare Systems, Inc. | Multi-user remote health monitoring system with biometrics support |
US8095340B2 (en) | 1992-11-17 | 2012-01-10 | Health Hero Network, Inc. | Home power management system |
US8260630B2 (en) | 1992-11-17 | 2012-09-04 | Health Hero Network, Inc. | Modular microprocessor-based appliance system |
US8249894B2 (en) | 1992-11-17 | 2012-08-21 | Robert Bosch Healthcare, Inc. | Networked remote patient monitoring with handheld devices |
US7904310B2 (en) | 1994-04-26 | 2011-03-08 | Health Hero Network, Inc. | Blood glucose monitoring system |
US7901625B2 (en) | 1994-04-26 | 2011-03-08 | Health Hero Network, Inc. | System for performing diabetes self-care |
US7908152B2 (en) | 1994-04-26 | 2011-03-15 | Health Hero Network, Inc. | Blood glucose monitoring system |
US7877271B2 (en) | 1994-04-26 | 2011-01-25 | Health Hero Network, Inc. | Blood glucose monitoring system |
US9123083B2 (en) | 1994-04-26 | 2015-09-01 | Robert Bosch Healthcare Systems, Inc. | Blood glucose monitoring system |
US7966230B2 (en) | 1994-04-26 | 2011-06-21 | Health Hero Network, Inc. | Method and apparatus for remote health monitoring and providing health related information |
US8616895B2 (en) | 1994-05-23 | 2013-12-31 | Robert Bosch Healthcare Systems, Inc. | System and method for monitoring a physiological condition |
US7862506B2 (en) | 1994-05-23 | 2011-01-04 | Health Hero Network, Inc. | Diabetes management system |
US8655259B2 (en) | 1994-05-23 | 2014-02-18 | Robert Bosch Healthcare Systems, Inc. | System and method for monitoring a physiological condition |
US7871376B2 (en) | 1994-05-23 | 2011-01-18 | Health Hero Network, Inc. | System and method for monitoring a physiological condition |
US7867165B2 (en) | 1994-05-23 | 2011-01-11 | Health Hero Network, Inc. | System and method for monitoring a physiological condition |
US7869852B2 (en) | 1994-05-23 | 2011-01-11 | Health Hero Network, Inc. | Diabetes management system |
US7972267B2 (en) | 1994-05-23 | 2011-07-05 | Health Hero Network, Inc. | Diabetes management system |
US7258666B2 (en) | 1995-06-07 | 2007-08-21 | Health Hero Network, Inc. | System and methods for monitoring a patient's heart condition |
US7684999B2 (en) | 1995-06-07 | 2010-03-23 | Health Hero Network, Inc. | User-based health monitoring |
EP0764910A1 (en) * | 1995-09-20 | 1997-03-26 | Colin Corporation | Blood pressure measuring apparatus |
US5680869A (en) * | 1995-09-20 | 1997-10-28 | Colin Corporation | Blood pressure measuring apparatus |
US5727560A (en) * | 1995-09-20 | 1998-03-17 | Colin Corporation | Blood pressure measuring apparatus |
US5941829A (en) * | 1995-11-08 | 1999-08-24 | Instromedix, Inc. | Concurrent medical patient data and voice communication method and apparatus |
US7305348B1 (en) | 1996-02-20 | 2007-12-04 | Health Hero Network, Inc. | Aggregating and pooling health related information in a communication system with feedback |
US20060089541A1 (en) * | 1996-06-17 | 2006-04-27 | Braun Jeffrey C | General-purpose medical instrumentation |
US6375614B1 (en) | 1996-06-17 | 2002-04-23 | Cybernet Systems Corporation | General-purpose medical istrumentation |
US20020151771A1 (en) * | 1996-06-17 | 2002-10-17 | Braun Jeffrey C. | General-purpose medical instrumentation |
US6875174B2 (en) | 1996-06-17 | 2005-04-05 | Cybernet Systems Corporation | General-purpose medical instrumentation |
US8079953B2 (en) | 1996-06-17 | 2011-12-20 | Cybernet Systems Corporation | General-purpose medical instrumentation |
US8562527B2 (en) | 1996-06-17 | 2013-10-22 | Cybernet Systems Corporation | General-purpose medical instrumentation |
US7769605B2 (en) | 1996-10-16 | 2010-08-03 | Health Hero Network, Inc. | Multiple patient monitoring system for proactive health management |
US7778845B2 (en) | 1996-10-16 | 2010-08-17 | Health Hero Network, Inc. | Multiple patient monitoring system for proactive health management |
US7765112B2 (en) | 1996-10-16 | 2010-07-27 | Health Hero Network, Inc. | Multiple patient monitoring system for proactive health management |
US7840420B2 (en) | 1996-10-16 | 2010-11-23 | Health Hero Network, Inc. | Multiple patient monitoring system for proactive health management |
US7636667B2 (en) | 1996-12-23 | 2009-12-22 | Health Hero Networks, Inc. | Network media access control system for encouraging patient compliance with a treatment plan |
US7590549B2 (en) | 1996-12-23 | 2009-09-15 | Health Hero Network, Inc. | Network media access control system for encouraging patient compliance with a treatment plan |
US7584108B2 (en) | 1996-12-23 | 2009-09-01 | Health Hero Network, Inc. | Network media access control system for encouraging patient compliance with a treatment plan |
US7392167B2 (en) | 1997-01-10 | 2008-06-24 | Health Hero Network, Inc. | Disease simulation system and method |
US20010047252A1 (en) * | 1997-01-10 | 2001-11-29 | Brown Stephen J. | Disease simulation system and method |
US7643971B2 (en) | 1997-01-10 | 2010-01-05 | Health Hero Network, Inc. | Disease simulation system and method |
US7167818B2 (en) | 1997-01-10 | 2007-01-23 | Health Hero Network, Inc. | Disease simulation system and method |
USRE43316E1 (en) | 1997-01-10 | 2012-04-17 | Health Hero Network, Inc. | Diabetes management system and method for controlling blood glucose |
US7613621B2 (en) | 1997-01-16 | 2009-11-03 | Health Hero Network, Inc. | Personalized body image |
US7555436B2 (en) | 1997-01-16 | 2009-06-30 | Health Hero Network, Inc. | Personalized display of health information |
US7925522B2 (en) | 1997-01-16 | 2011-04-12 | Health Hero Network, Inc. | Personalized body image |
US7814143B2 (en) | 1997-03-10 | 2010-10-12 | Health Hero Network, Inc. | System and method for modifying documents sent over a communications network |
US7533171B2 (en) | 1997-03-28 | 2009-05-12 | Health Hero Network, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US8990336B2 (en) | 1997-03-28 | 2015-03-24 | Robert Bosch Healthcare Systems, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US7921186B2 (en) | 1997-03-28 | 2011-04-05 | Health Hero Network, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US7870249B2 (en) | 1997-03-28 | 2011-01-11 | Health Hero Network, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US7822625B2 (en) | 1997-03-28 | 2010-10-26 | Health Hero Network, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US8959198B2 (en) | 1997-03-28 | 2015-02-17 | Robert Bosch Healthcare Systems, Inc. | Optimizing oxygen tank deliver or refills for COPD patients through measurement of blood oxygen levels |
US7987100B2 (en) | 1997-03-28 | 2011-07-26 | Health Hero Network, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US8870762B2 (en) | 1997-03-28 | 2014-10-28 | Robert Bosch Gmbh | Electronic data capture in clinical and pharmaceutical trials |
US6968375B1 (en) | 1997-03-28 | 2005-11-22 | Health Hero Network, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US8608653B2 (en) | 1997-03-28 | 2013-12-17 | Robert Bosch Gmbh | Networked system for interactive communication and remote monitoring of individuals |
US7734718B2 (en) | 1997-03-28 | 2010-06-08 | Health Hero Network, Inc. | Smart appliance functionality |
US7730177B2 (en) | 1997-03-28 | 2010-06-01 | Health Hero Network, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US7252636B2 (en) | 1997-03-28 | 2007-08-07 | Health Hero Network, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US7707270B2 (en) | 1997-03-28 | 2010-04-27 | Health Hero Network, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US7587469B2 (en) | 1997-03-28 | 2009-09-08 | Health Hero Network, Inc. | Audio instructions for appliances |
US8078407B1 (en) | 1997-03-28 | 2011-12-13 | Health Hero Network, Inc. | System and method for identifying disease-influencing genes |
US7310668B2 (en) | 1997-03-28 | 2007-12-18 | Health Hero Network, Inc. | Remotely monitoring an individual using scripted communications |
US7516192B2 (en) | 1997-03-28 | 2009-04-07 | Health Hero Network, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US8140663B2 (en) | 1997-03-28 | 2012-03-20 | Health Hero Network, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US7320030B2 (en) | 1997-03-28 | 2008-01-15 | Health Hero Network, Inc. | Remote health monitoring apparatus using scripted communications |
US8353827B2 (en) | 1997-03-28 | 2013-01-15 | Robert Bosch Healthcare Systems, Inc. | Networked system for interactive communication and remote monitoring of individuals |
US5931791A (en) * | 1997-11-05 | 1999-08-03 | Instromedix, Inc. | Medical patient vital signs-monitoring apparatus |
US8005690B2 (en) | 1998-09-25 | 2011-08-23 | Health Hero Network, Inc. | Dynamic modeling and scoring risk assessment |
US8521546B2 (en) | 1998-09-25 | 2013-08-27 | Health Hero Network | Dynamic modeling and scoring risk assessment |
US6428481B1 (en) * | 1998-11-27 | 2002-08-06 | Colin Corporation | Blood pressure monitor apparatus |
US8265907B2 (en) | 1999-03-03 | 2012-09-11 | Card Guard Scientific Survival Ltd. | System and a method for physiological monitoring |
US9015008B2 (en) | 1999-03-03 | 2015-04-21 | Card Guard Scientific Survival Ltd. | System and a method for physiological monitoring |
US20100117835A1 (en) * | 1999-03-03 | 2010-05-13 | Reuven Nanikashvili | System and a method for physiological monitoring |
US8527206B2 (en) | 1999-03-22 | 2013-09-03 | Robert Bosch Gmbh | Research data collection and analysis |
US20040193377A1 (en) * | 1999-03-22 | 2004-09-30 | Brown Stephen J. | Research data collection and analysis |
US6258037B1 (en) | 1999-06-25 | 2001-07-10 | Cardiodyne Division Of Luxtec Corporation | Measuring blood pressure in noisy environments |
US6645155B2 (en) | 2000-05-26 | 2003-11-11 | Colin Corporation | Blood pressure monitor apparatus |
US7260480B1 (en) | 2003-04-07 | 2007-08-21 | Health Hero Network, Inc. | Method and system for integrating feedback loops in medical knowledge development and healthcare management |
US8945009B2 (en) | 2003-05-08 | 2015-02-03 | Robert Bosch Heathcare Systems, Inc. | Remote health monitoring system |
US7399276B1 (en) | 2003-05-08 | 2008-07-15 | Health Hero Network, Inc. | Remote health monitoring system |
US7996187B2 (en) | 2005-02-16 | 2011-08-09 | Card Guard Scientific Survival Ltd. | Method and system for health monitoring |
US10262111B2 (en) | 2005-10-14 | 2019-04-16 | Medicalgorithmics S.A. | Systems for safe and remote outpatient ECG monitoring |
US11183305B2 (en) | 2005-10-14 | 2021-11-23 | Medicalgorithmics S.A. | Systems for safe and remote outpatient ECG monitoring |
US8818496B2 (en) | 2005-10-14 | 2014-08-26 | Medicalgorithmics Ltd. | Systems for safe and remote outpatient ECG monitoring |
US20080260173A1 (en) * | 2005-10-14 | 2008-10-23 | Medicalgorithmics Ltd. | Method, device and system for cardio-acoustic signal analysis |
US20090171227A1 (en) * | 2005-10-14 | 2009-07-02 | Medicalgorithmics Ltd. | Systems for safe and remote outpatient ecg monitoring |
US9351652B2 (en) | 2005-10-14 | 2016-05-31 | Medicalgorithmics S.A. | Systems for safe and remote outpatient ECG monitoring |
US7753856B2 (en) | 2005-10-14 | 2010-07-13 | Medicalgorithmics Ltd. | Method, device and system for cardio-acoustic signal analysis |
US20110125036A1 (en) * | 2006-10-18 | 2011-05-26 | Toshiaki Nakajima | Therapeutic system, therapeutic device, and control method |
US8900153B2 (en) | 2007-03-20 | 2014-12-02 | Mortara Instrument, Inc. | Ambulatory patient monitoring apparatus, system and method |
US20080234587A1 (en) * | 2007-03-20 | 2008-09-25 | Tiba Medical, Inc. | Ambulatory patient monitoring apparatus, system and method |
EP2384472A4 (en) * | 2009-01-30 | 2015-06-10 | Devilbiss Healthcare Llc | Device having coded output of operational data |
CN102498474B (en) * | 2009-01-30 | 2015-08-26 | 德维比斯保健有限责任公司 | The device that the coding with service data exports |
JP2012516204A (en) * | 2009-01-30 | 2012-07-19 | サンライズ メディカル エイチエイチジー インコーポレイテッド | Device with coded output of operating data |
CN102498474A (en) * | 2009-01-30 | 2012-06-13 | 德维比斯保健有限责任公司 | Device having coded output of operational data |
US20100199102A1 (en) * | 2009-01-30 | 2010-08-05 | Sunrise Medical HHG, Inc. (DBA DeVilbiss Healthcare) | Device Having Coded Output of Operational Data |
AU2010208555B2 (en) * | 2009-01-30 | 2014-05-08 | Devilbiss Healthcare Llc | Device having coded output of operational data |
US8649510B2 (en) * | 2009-01-30 | 2014-02-11 | Devilbiss Healthcare, Llc | Device having coded output of operational data |
CN109862826A (en) * | 2016-08-18 | 2019-06-07 | 皇家飞利浦有限公司 | Blood pressure management |
US11504927B2 (en) | 2018-03-23 | 2022-11-22 | TurnCare, Inc. | Systems and methods for controlling and monitoring inflatable perfusion enhancement apparatus for mitigating contact pressure |
US11737905B2 (en) | 2018-03-23 | 2023-08-29 | TurnCare, Inc. | Inflatable perfusion enhancement apparatuses and associated devices, systems and methods |
WO2020069186A1 (en) * | 2018-09-26 | 2020-04-02 | TurnCare, Inc. | Systems and methods for controlling and monitoring inflatable perfusion enhancement apparatus for mitigating contact pressure |
US11980565B2 (en) | 2019-03-25 | 2024-05-14 | TurnCare, Inc. | Inflatable perfusion enhancement apparatuses and associated devices, systems and methods |
US11981099B2 (en) | 2022-01-25 | 2024-05-14 | TurnCare, Inc. | Methods for controlling and monitoring inflatable perfusion enhancement apparatuses and associated systems |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4967756A (en) | Blood pressure and heart rate monitoring method and apparatus | |
US4860759A (en) | Vital signs monitor | |
US4889132A (en) | Portable automated blood pressure monitoring apparatus and method | |
US4799491A (en) | Blood pressure monitoring method and apparatus | |
US6241679B1 (en) | Non-invasive blood pressure sensing device and method using transducer with associate memory | |
EP0353315B1 (en) | Method for measuring blood pressure and apparatus for automated blood pressure measuring | |
EP0814699B1 (en) | External patient reference sensor | |
EP0365614B1 (en) | Cardiovascular pressure and condition method and apparatus | |
US7775985B2 (en) | Method for analysing pressure signals derivable from a body cavity | |
US6132382A (en) | Non-invasive blood pressure sensor with motion artifact reduction | |
US6497657B2 (en) | Remote diagnosis system | |
US6004274A (en) | Method and apparatus for continuous non-invasive monitoring of blood pressure parameters | |
US4489731A (en) | Pulse rate monitor | |
US3996925A (en) | System for determining characteristics of blood flow | |
US20040167417A1 (en) | Apparatus and method for chronically monitoring heart sounds for deriving estimated blood pressure | |
US20070088223A1 (en) | Hemodynamic waveform-based diagnosis and treatment | |
US4252127A (en) | Portable blood pressure recorder | |
EP0203181B1 (en) | Portable automated blood pressure monitoring apparatus and method | |
EP0472473B1 (en) | Pulse detecting apparatus | |
US4922918A (en) | Automatic non-invasive blood pressure reading device | |
Pryor et al. | Computer system for research and clinical application to medicine | |
AYLETT | Ambulatory or self blood pressure measurement? Improving the diagnosis of hypertension | |
JPH0580901B2 (en) | ||
CA1304453C (en) | Blood pressure monitoring method and apparatus | |
JPS61247433A (en) | Electronic hemomanometer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: INSTROMEDIX, INC., HILLSBORO, OR, A CORP. OF OR Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HEWITT, TERRY L.;REEL/FRAME:004912/0212 Effective date: 19880615 Owner name: INSTROMEDIX, INC.,OREGON Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HEWITT, TERRY L.;REEL/FRAME:004912/0212 Effective date: 19880615 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
AS | Assignment |
Owner name: CARD GUARD TECHNOLOGIES, INC., GEORGIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ALARIS MEDICAL SYSTEMS, INC.;REEL/FRAME:011204/0654 Effective date: 20000831 |
|
FEPP | Fee payment procedure |
Free format text: PAT HOLDER NO LONGER CLAIMS SMALL ENTITY STATUS, ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: STOL); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
REFU | Refund |
Free format text: REFUND - PAYMENT OF MAINTENANCE FEE, 12TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: R285); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 12 |